320+ watts at 4Ω CFA-based Op amp input with Hybrid CFP output stage Power Amp Project.
Автор: BuildAudioAmps
Загружено: 2024-06-15
Просмотров: 1914
Описание:
Project 65 uses an op-amp in the front-end stage of the audio power amplifier. The CFA-based op-amp input stage is connected to a full complementary hybrid compound feedback pair output stage. The implementation of BJT drivers and MOSFET power output devices is sometimes referred to as a hybrid design.
The concept of the amplifier is based on the Alexander CFA power amplifier (Analog Devices AN-211) and Exicon MOSFET’s application notes (High performance power amplifiers).
Applying a sine input signal of 1KHz and 1.84Vp-p, the prototype produces 35.82Vrms across the 8Ω dummy load. This is equal to a power output of 160.38 watts at 1KHz, 1.84 Vp-p. The amplifier produces 35.82 Vrms across the 8Ω dummy load. This is equal to a power output of 160.38 watts at 8Ω or 320.77 watts at 4Ω .
If you have built a similar CFP-based amplifier project, then you will agree that the audio quality this type of output stage will reproduce is very impressive.
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